Abstract: An explosion-protected plug-in connector, particularly for coupling of a VoIP telephone with a network, has at least one housing and at least one first electrical connector unit in the housing. At least one conductor end section of the network engages into the connector unit. Supplemental to the first electrical connector unit, which is configured as an IDC terminal unit, there is at least one further second IDC terminal unit provided in the housing. The conductor end section engages into the two IDC terminal units. A hold-down disposed between the two IDC terminal units is provided for the conductor end section.